MagicKit.ai

Voltage Drop Calculator

Calculate voltage drop in electrical circuits. Determine wire gauge needed for acceptable voltage drop over distance.

How to Calculate Voltage Drop

  1. 1 Enter system voltage and select phase type
  2. 2 Input load current in amps
  3. 3 Enter wire length and select gauge
  4. 4 Choose conductor material (copper or aluminum)
  5. 5 Set maximum allowed voltage drop percentage
  6. 6 Review voltage drop, power loss, and recommendations

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Last updated: January 15, 2026 · v2.1